most recently: https://cyberpress.org/critical-libvpx-vulnerability-in-fire..., but you can have your pick from any year https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=webrtc

You're right that biggest reason people usually recommend disabling it is to prevent your IP from leaking when using a VPN https://www.techradar.com/vpn/webrtc-leaks but not having to worry about RCE or DoS is a nice bonus

I'm not sure how much will this impact ffmpeg users. Considering that WebRTC has a bad track record in terms of security though, I do worry a little that its inclusion in one more place on our systems could increase attack surface.